CA2462033A1 - Method of forming a continuous belt for a belt-type separator device - Google Patents

Method of forming a continuous belt for a belt-type separator device Download PDF

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Publication number
CA2462033A1
CA2462033A1 CA002462033A CA2462033A CA2462033A1 CA 2462033 A1 CA2462033 A1 CA 2462033A1 CA 002462033 A CA002462033 A CA 002462033A CA 2462033 A CA2462033 A CA 2462033A CA 2462033 A1 CA2462033 A1 CA 2462033A1
Authority
CA
Canada
Prior art keywords
thermoplastic sheet
edge
portions
belt
thermoplastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002462033A
Other languages
French (fr)
Other versions
CA2462033C (en
Inventor
David R. Whitlock
Bulent Sert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Separation Technologies LLC
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2462033A1 publication Critical patent/CA2462033A1/en
Application granted granted Critical
Publication of CA2462033C publication Critical patent/CA2462033C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G3/00—Belt fastenings, e.g. for conveyor belts
    • F16G3/10—Joining belts by sewing, sticking, vulcanising, or the like; Constructional adaptations of the belt ends for this purpose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C7/00—Separating solids from solids by electrostatic effect
    • B03C7/02—Separators
    • B03C7/08—Separators with material carriers in the form of belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
    • B29C66/02241—Cutting, e.g. by using waterjets, or sawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
    • B29C66/1162—Single bevel to bevel joints, e.g. mitre joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/14—Particular design of joint configurations particular design of the joint cross-sections the joint having the same thickness as the thickness of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4324—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms for making closed loops, e.g. belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
    • B29C66/73111—Thermal expansion coefficient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0246—Cutting or perforating, e.g. burning away by using a laser or using hot air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
    • B29C66/73117—Tg, i.e. glass transition temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7314—Electrical and dielectric properties
    • B29C66/73143—Dielectric properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
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    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
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    • B29L2031/709—Articles shaped in a closed loop, e.g. conveyor belts
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    • B29L2031/709—Articles shaped in a closed loop, e.g. conveyor belts
    • B29L2031/7092—Conveyor belts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y10T428/00—Stock material or miscellaneous articles
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y10T428/192—Sheets or webs coplanar
    • Y10T428/195—Beveled, stepped, or skived in thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24777—Edge feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Replacement Of Web Rolls (AREA)
  • Moulding By Coating Moulds (AREA)
  • Cell Separators (AREA)
  • Advancing Webs (AREA)
  • Paper (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Belt Conveyors (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Electrostatic Separation (AREA)

Abstract

The application discloses a belt formed of first (52) and (54) second portions of thermoplastic sheet including, respectively, first and second pluralities of tabs (56) spaced apart so as to define first and second pluralities of openings (50) along corresponding first and second edges of the first and second portions of thermoplastic sheet, wherein the first plurality of tabs are joined to the second plurality of tabs so as to join the first edge to the second edge. Also disclosed is a method for forming a belt of a thermoplastic material, including forming angles on a first edge of a first portion of thermoplastic sheet and on a second edge of a second portion of thermoplastic sheet, forming first and second pluralities of openings, respectively, in the first and second portions of thermoplastic sheet, placing together the first and second edges such that they overlap, and joining the first and second portions of thermoplastic sheet together.

Claims (38)

1. A method for joining, to each other, a first edge of a first portion of thermoplastic sheet and a second edge of a second portion of thermoplastic sheet, the method comprising:
forming angles on the first edge of the first portion of thermoplastic sheet and on the second edge of the second portion of thermoplastic sheet;
forming a first plurality of openings in the first portion of thermoplastic sheet, the openings extending transversely to a first edge of the first portion of thermoplastic sheet;
forming a second plurality of openings in the second portion of thermoplastic sheet;
to be joined to the first portion of thermoplastic sheet, the openings extending transversely to a second edge of the second portion of thermoplastic sheet;
placing together the first and second edges of the first and second portions of thermoplastic sheet, such that the first and second portions of thermoplastic sheet include overlapping portions; and joining the first and second portions of thermoplastic sheet,together.
2. The method as claimed in claim 1, wherein the act of joining includes an act of welding the first and second portions of thermoplastic sheet together.
3. The method as claimed in claim 1, wherein the act of forming angles includes forming substantially matching acute angles on the first edge and on the second edge.
4. The method as claimed in claim 1, wherein the act of joining comprises:
heating under pressure at least the overlapping portions of the first and second portions of thermoplastic sheet to above a melting temperature of the first and second portions of thermoplastic sheet so that the overlapping portions of the first and second portions of thermoplastic sheet become joined together; and cooling at least the overlapping portions of the first and second portions of thermoplastic sheet.
5. The method as claimed in claim 1, wherein the act of joining includes:
pressing the first and second edges together;
heating the first and second edges to above a melting temperature of the thermoplastic sheets;

maintaining contact between the first and second edges for a predetermined period of time; and cooling the first and second edges, so that they are joined together.
6. The method as claimed in either claim 4 or claim 5, wherein the act of heating includes heating by direct contact with heated platens.
7. The method as claimed in either claim 4 or claim 5, wherein the act of cooling includes cooling by direct contact with cooled platens.
8. The method as claimed in claim 5, wherein the act of pressing the first and second edges together comprises pressing the first and second edges together with a pair of platens.
9. The method as claimed in claim 8, wherein a width of each platen of the pair of platens is approximately 1.5 inches.
10. The method as claimed in claim 1, wherein the thermoplastic material is ultra-high-molecular-weight-polyethylene.
11. The method as claimed in claim 1, further comprising perforating the first and second portions of thermoplastic sheet.
12. The method as claimed in claim 11, wherein the act of perforating the first and second portions of thermoplastic sheet includes perforating the first and second portions of thermoplastic sheet such that an open area of perforated sheet exceeds 50% of a total area of the perforated sheet.
13. The method as claimed in claim 11, wherein the act of perforating the first and second portions of thermoplastic sheet includes forming perforations so as to produce a leading edge of the belt with an acute angle.
14. The method as claimed in claim 13, wherein the act of perforating includes forming perforations so as to produce the leading edge of the belt with the acute angle being less than approximately 60 degrees.
15. The method as claimed in claim 1, wherein the act of placing together the first and second portions of thermoplastic sheet includes placing together the first and second portions of thermoplastic sheet such that the overlapping portions have a thickness that is approximately 10% greater than a thickness of the first portion of thermoplastic sheet.
16. The method as claimed in claim 1, wherein the acts of forming openings include forming the openings such that a spacing between the openings is approximately 1 inch.
17. The method as claimed in claim 1, wherein the acts of forming openings include forming openings having a width greater than approximately 1/8 inches.
18. The method as claimed in claim 1, wherein the acts of forming openings include forming openings having a length of approximately 2 inches.
19. The method as claimed in claim 1, wherein the thermoplastic sheet is nylon.
20. The method as claimed in claim 1, used for joining, to each other, a first edge of a first thermoplastic sheet and a second edge of a second thermoplastic sheet.
21. The method as claimed in claim 20, wherein the act of forming openings in the first edge comprises forming openings in the first edge of the first thermoplastic sheet, the openings extending transversely from the first edge into the first thermoplastic sheet.
22. The method as claimed in claim 20, wherein the act of forming openings in the second edge comprises forming openings in the second edge of the second thermoplastic sheet, the openings extending transversely from the second edge into the second thermoplastic sheet.
23. The method as claimed in claim 1, wherein the act of joining the first and second portions of thermoplastic sheet together includes joining together a first edge and a second edge of a same thermoplastic sheet, to provide a continuous belt.
24. The method as claimed in claim 1, further comprising joining the first and second portions of thermoplastic sheet with at least one additional thermoplastic sheet to form a composite sheet.
25. The method as claimed in claim 24, further comprising joining together opposing edges of the composite sheet, to form a continuous belt.
26. The method as claimed in claim 1 where the thermoplastic material contains a polymerization product of at least one olefinic monomer.
27. The method as claimed in claim 1, wherein the thermoplastic material comprises Ultra-high-molecular-weight polyethylene.
28. A belt comprising:
A first portion of thermoplastic sheet comprising a first plurality of tabs spaced apart so as to define a first plurality of openings along a first edge of the first portion of thermoplastic sheet; and a second portion of thermoplastic sheet comprising a second plurality of tabs spaced apart so as to define a second plurality of openings along a second edge of the second portion of thermoplastic sheet;
wherein the first plurality of tabs are joined to the second plurality of tabs so as to join the first edge to the second edge.
29. The belt as claimed in claim 28, wherein the thermoplastic sheets comprises nylon.
30. The belt as claimed in claim 28, wherein the thermoplastic sheet comprises ultra-high-molecular-weight-polyethylene.
31. The belt as claimed in claim 28, wherein the thermoplastic sheet comprises at least one olefinic monomer.
32. The belt as claimed in claim 28, wherein the each tab of first and second plurality of tabs is tapered.
33. The belt as claimed in claim 28, wherein the first and second portions of thermoplastic sheet include a single thermoplastic sheet, and wherein the first and second edges are joined so as to form a continuous belt.
34. The belt as claimed in claim 28, further comprising at least one additional portion of thermoplastic sheet that is joined to at least one of the first and second portions of thermoplastic sheet to form a composite thermoplastic sheet.
35. The belt as claimed in claim 34, wherein opposing edges of the composite sheet are joined together to form a continuous belt.
36. The belt as claimed in claim 28, further comprising a strength member.
37. The belt as claimed in claim 36, wherein the strength member includes an imporforate section of thermoplastic sheet located proximate the first and second edges.
38. The belt as claimed in claim 36, wherein the strength member comprises an imporforate section of belt disposed along a longitudinal edge of the belt.
CA2462033A 2001-09-27 2002-09-27 Method of forming a continuous belt for a belt-type separator device Expired - Lifetime CA2462033C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US32542601P 2001-09-27 2001-09-27
US60/325,426 2001-09-27
PCT/US2002/030715 WO2003027536A2 (en) 2001-09-27 2002-09-27 Method of forming a continuous belt for a belt-type separator device

Publications (2)

Publication Number Publication Date
CA2462033A1 true CA2462033A1 (en) 2003-04-03
CA2462033C CA2462033C (en) 2010-08-10

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CA2462033A Expired - Lifetime CA2462033C (en) 2001-09-27 2002-09-27 Method of forming a continuous belt for a belt-type separator device

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US (2) US6942752B2 (en)
EP (1) EP1440251B1 (en)
JP (1) JP4317746B2 (en)
KR (1) KR100798387B1 (en)
CN (1) CN100441904C (en)
AT (1) ATE421052T1 (en)
AU (1) AU2002356529B2 (en)
BR (1) BR0212853B1 (en)
CA (1) CA2462033C (en)
CZ (1) CZ2004540A3 (en)
DE (1) DE60230898D1 (en)
DK (1) DK1440251T3 (en)
ES (1) ES2321076T3 (en)
IL (2) IL161023A0 (en)
PL (1) PL206198B1 (en)
PT (1) PT1440251E (en)
RU (1) RU2309847C2 (en)
TW (1) TW562701B (en)
UA (1) UA79437C2 (en)
WO (1) WO2003027536A2 (en)
ZA (1) ZA200402346B (en)

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US10092908B2 (en) 2014-04-24 2018-10-09 Separation Technologies Llc Continuous belt for belt-type separator devices

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Also Published As

Publication number Publication date
UA79437C2 (en) 2007-06-25
BR0212853B1 (en) 2011-01-11
ATE421052T1 (en) 2009-01-15
RU2309847C2 (en) 2007-11-10
PL367339A1 (en) 2005-02-21
CA2462033C (en) 2010-08-10
CZ2004540A3 (en) 2005-02-16
JP4317746B2 (en) 2009-08-19
EP1440251A2 (en) 2004-07-28
DE60230898D1 (en) 2009-03-05
CN1578886A (en) 2005-02-09
AU2002356529B2 (en) 2008-08-14
CN100441904C (en) 2008-12-10
RU2004112769A (en) 2005-03-27
PT1440251E (en) 2009-04-16
KR20040062553A (en) 2004-07-07
BR0212853A (en) 2004-10-13
PL206198B1 (en) 2010-07-30
JP2005504651A (en) 2005-02-17
US7467709B2 (en) 2008-12-23
WO2003027536A2 (en) 2003-04-03
US6942752B2 (en) 2005-09-13
IL161023A (en) 2009-06-15
IL161023A0 (en) 2004-08-31
WO2003027536A3 (en) 2003-10-02
KR100798387B1 (en) 2008-01-28
ZA200402346B (en) 2005-06-29
US20030070967A1 (en) 2003-04-17
ES2321076T3 (en) 2009-06-02
WO2003027536A9 (en) 2003-08-14
US20050279451A1 (en) 2005-12-22
TW562701B (en) 2003-11-21
EP1440251B1 (en) 2009-01-14
DK1440251T3 (en) 2009-02-16

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